Temperature alarm



Oct. '21, 1947. A. -H. vlsocAN 2,429,572

TEMPERATURE ALARM Filed Oct. 1; 1945 Inventor Patented Oct. 21, 1947 UNITED STATES PATENT' OFFICE K it 2 ,429,572 TEMPERATURE ALARM I Andy H. Visocan, Raynesford, Mont. v, H

Application October 1, 1945, Serial No. 619,539

This invention relates to a temperature alarm strips which are mounted so that one may move;

toward the other, movement of the movable strips beingcontrolled by a thermostat so that when the temperature within a brooder or the like is reduced to sucha point that there is danger of small chickensbeing chilled, an. alarm will be sounded to attract the attention of a person having charge of thebrooden' I Another object of the invention is to provide a circuit closing device so constructed that it may be adjusted and set for" a predetermined temperature, provision being also made to cause a circuit through an alarm to be closed when a predetermined variation in temperature occurs.

Another object of the invention is to provide a circuit closer consisting of a, comparatively few number of parts, all of which are of simple construction and not liable to getout of order. The invention is illustrated in the accompanying drawing, wherein:

Figure 1 is a top plan view of the improved glam, 1"

Figure 2 is a side view thereof, I

Figure 3 is a view looking at the device. from one end;

Figure 4 is a sectional view taken along the line 4-4 of Figure 2, and

Figure 5 is a sectional view taken along the line 5-5 of Figure 2.

This alarm device or circuit closer has a base I which may be formed of hard rubber or other suitable insulating material. Intermediate its length the base is formed with a step 2 in order to dispose the end portion 3 of the base in a plane below the level of the remainder of the base. This base may be mounted in any desired manner in order that it may be supported in an incubator or brooder. A bracket 4 having downwardly bent portions 5 terminating in seat 6 is secured transversely of the base adjacent one end thereof by screws or equivalent fasteners I, and to this bracket is secured a strip 8 which extends longitudinaly of the base in vertical spaced relation thereto. The inner end portion of the strip 8 is free and upon this end portion of the invention is to provide an 2 Claims. (01. 200-) a 2 strip is mounted a contact ii'which projects upwardly therefrom. The strip 8 andthebracket 4 are formed of conductive material and at least one of the fasteners: 1 extends downwardly through the base to form a terminal to which a conductor wire isladapted to besecured by a nut 9'. Incase the basesh'ouldbe'formed of material of a conductive :nature, the bracket 4 and its fastener .1 may be insulated from the base by washers. l0 formed of insulating'material.

Posts I l which are formediof metal aredisposed vertically near side edges ofthe base, one post being screwed into 1a'iblock'or socket l2 carried by the base and the "otherbeing passed through a block [3 and through antopening l4'formed in the base and registering with the bore of the block l3. j

The elongated posthas its lower portion pr'ojecting downwardly to form .a terminal with which a second conductor wire may 'besecured by a nut I5. It should be noted thatthese posts are insulated from theyblock by bushings l6 and I1 formed of insulating material. 'Above the blocks 12 'zan'd" l3, thelpostsnpa'ss through spacing sleeves l8 andcarry a cross-bar H! which is held upon the spacerxby nuts 20; The crossbar or bridge 19 is circular in 'cross section, as shown in Figure2yand upon this cross-bariis mounted a hanger bracket 2|. The hanger bracket is formed integral with the inner end of a strip 22 formed :ofconductive material, against the under face of which is mounted 'a Referring to Figures 2 and '4,itwill be seen that the contact 23 isdisposed directly above the contact 9. Therefore; whenfthe strip 22 is flexed downwardly, the contact 23 may be brought into engagement with contact 9 and a circuit will be closed through the conductor wires attached to the terminal portions of the fasteners l and II and cause a bell to ring or warning light to be illuminated and thus attract attention of an attendant instead of allowing the temperature to be lowered to such a point that small chickens in a brooder will be killed or eggs in an incubator caused to become chilled to such an extent that they will not hatch. Cotter keys 24 are passed through openings formed in the cross-bar or bridge I9 and serve to prevent the bracket 2! from shifting along the cross-bar to such an extent that the contact 23 carried by strip 22 will be out of position to make contact with the contact 9.

In order to control movement of the strip 22, there has been provided a thermostat 25 of the bel- 3 lows type. This thermostat has 3, depending neck 26, into which engages the upper end of a threaded post or screw 2'! which passes through a threaded opening formed in the depressed portion 3 of the base and carries a lock nut 28 for securing the post or screw in a vertically adjusted position. A threaded post 29 extends upwardly from the thermostat through an opening formed near the outer end of strip 22 which is firmly held in place about post 29 by a nut 30. A bushing 31 of insulating material prevents direct engagement of strip 22 with post 29 and thus eliminates the likelihood of. a short circuit at this point. By adjusting the post 21 yertically, the contact 23 may be. spaced:

upwardly from contact 9 such a distance that the contact 23 cannot have engagement with contact 9 until the thermostat has contractedto a predettermined extent, and since this contraction of the thermostat is caused by lowering of temperature in a brooder or incubator, the operator of the brooder or incubator mayset the device to permit predetermined lowering of the temperature before an alarm will be sounded. When a. brooder is equipped with: the improved signal, danger of small chickens being chilled. by thetemperature becoming too cold will be eliminated.

It is thought that personszshilled in: the art to which the invention relates will be ableto obtain. a clearunderstanding: of the invention after considering; thev description in connection with the: drawings. Therefore,. a. more lengthy description is regardedas unnecessary.

Minor changes in the. shape,.size and arrangement of details coming within the: field: ofinvention claimed may be resorted-to: in: actual: practice, if desired;

What is claimed is:

1., A circuitv closerv for a. temperature signal comprising abase, ahracket carriedbysaid base, a strip carriediby said bracket: and? extending longitudinally of. said base in. vertical spaced relation thereto, posts mounted vertically adjacent opposite side edges of said: base forwardly of said bracket, a bridging bar extending between said posts and having. its ends: formed with openings through which said post's pass,v a. hanger bracket under said cross-bar having. upstanding" arms through which the cross-bar passes. to p'ivotall'y mount the-hanger bracket, a strip: extendingfrom:

said hanger bracket oven the first strip, contact r carried by confronting faces of said strips, one above the other, a post adjustably mounted. through said base adjacent the front endathereof, a thermostatcarriedby the upper'endiof said post, a-neck projecting: upwardly 'fromnsaidi thermostat and passing through: an opening. near'the forward end of the last-mentioned strip, and a fastener firmly securing the last-mentioned strip to said neck.

2. A circuit closer for a temperature alarm comprising a base carrying one end portion offset downwardly, a bracket carried by said base, fasteners for said bracket passing through said base and one constituting a terminal adapted to have a conductor wire secured thereto, a strip of conductive material carried bysaid bracket and extending longitudinally of said base in spaced relation thereto, blocks carried by said base adjacent opposite side edges thereof forwardly of said. bracket, posts carried by said blocks, one of said posts extending downwardly through the base and adaptedto have a conductor wire connected therewith. a cross-bar extending between said posts and formed near its end with openings through which the posts pass, spaces about said posts between said blocks and ends of said bar, fasteners screwed. uporrupper'endportions of said posts and holding said. cross-bar: against said spaces, a hanger bracket suspended from and pivotally carried by saidicross-bar betweensaid posts, ping passing. through; said cross-bar to prevent: shifting. of the hanger bracket longitudinally of. the cross-bar, a stripof conductive: material ex-- tending from said hanger bracket longitudinally oisaid base' overthe first strip;,contacts: carried by confronting faces. of said. strip-in; opposed relat-ion to each other, a threaded post passing 1113- wardly' through; a, threaded: opening: formed" through the offset forward: end portion. ofsaid baseya set-screw carried-by saidzthreadedpost for:

. securing the threadedi post. in a vertically ad-- justed' position, a: thermostat having a depending, internally threaded-socket screwedxupon the REFERENCES CIIED- The following references are: of record in thefile-of this patent:

UNITED STATES PATENTS.

Name Date Blome Oct. 13, 1931: Mackelmann: Aug. 15; 1933 Lindgren Aug. 23, 1932 Irwin Apr. 18,1933

Number: 1,827,137 1,922,898 1,873,436 1,903,924 

